Tetra diamantiacae, Xue, Xiao-Feng, Song, Zi-Wei & Hong, Xiao-Yue, 2007

Xue, Xiao-Feng, Song, Zi-Wei & Hong, Xiao-Yue, 2007, Six new species of Te t r a Keifer (Acari: Eriophyidae: Phyllocoptinae) from China, Zootaxa 1614, pp. 1-16 : 7-9

Tetra diamantiacae sp. nov.

( Fig. 3 )

Description. FEMALE: (n = 11) Body fusiform, 212 (210–214), 65 (65–66) wide, 61 (59–62) thick; light yellow. Gnathosoma 20 (19–21), projecting obliquely down, pedipalp coxal setae (ep) 3 (2–3), dorsal pedipalp genual setae (d) 6 (5–6), chelicerae 18 (16–18), oral stylets 17 (16–17). Prodorsal shield 40 (40–41), 50 (49– 52) wide; subtriangular; frontal lobe present; medial line present 1/3 at base, admedian and submedian lines connected at basal 2/3, admedian lines concaved at basal 1/3. Dorsal tubercles on rear margin, 35 (35–36) apart, scapular setae (sc) 14 (13–15) projecting posteriorly. Coxal area with granules; anterolateral setae on coxisternum І (1b) 10 (9–11), proximal setae on coxisternum І (1a) 16 (15–17), proximal setae on coxisternum І (2a) 43 (41–45). Prosternal apodeme present. Legs with usual series of setae. Legs І 28 (26–30), femur 8 (8–9), basiventral femoral setae (bv) 9 (8–9); genu 5 (5–6), antaxial genual setae (l'') 22 (20–23); tibia 6 (6–7), paraxial tibial setae (l') 3 (2–3), setae located 1/3 from dorsal base; tarsus 5 (5–6); empodium simple, 4-rayed, tarsal solenidion knobbed. Legs І 24 (22–26), femur 6 (6–7), basiventral femoral setae (bv) 10 (9– 10); genu 4 (4–5), antaxial genual setae (l'') 6 (5–6); tibia 5 (4–5); tarsus 5 (5–6); empodium simple, 4-rayed, tarsal solenidion knobbed. Opisthosoma: dorsal opisthosoma with 36 (34–38) annuli, with elliptical microtubercles, ventrally with 66 (64–69) annuli, with round microtubercles. Setae c2 21 (20–23) on ventral annulus 13 (12–13); setae d 55 (50–57) on ventral annulus 25 (24–25), 36 (34–38) apart; setae e 13 (12–14) on ventral annulus 43 (42–44), 21 (20–21) apart; setae f 18 (19–22) on 6th ventral annulus from rear, 21 (21–22) apart. Setae h1 3 (3–4), setae h2 58 (55–62). Female genitalia 15 (15–16), 21 (21–22) wide, coverflap with 8 longitudinal ridges, proximal setae on coxisternum ІІІ (3a) 13 (11–15).

MALE: (n = 3) Body fusiform, 198 (196–201), 56 (55–56) wide; light yellow. Gnathosoma 18 (17–19), projecting obliquely down, pedipalp coxal setae (ep) 2 (1–2), dorsal pedipalp genual setae (d) 5 (4–5), chelicerae 18 (17–18), oral stylets 17 (15–17). Prodorsal shield 37 (36–37), 45 (44–46) wide; subtriangular. Dorsal tubercles on rear margin, 33 (32–33) apart, scapular setae (sc) 18 (17–19) projecting posteriorly. Coxal area with granules; anterolateral setae on coxisternum І (1b) 8 (8–9), proximal setae on coxisternum І (1a) 15 (15–16), proximal setae on coxisternum І (2a) 32 (30–34). Prosternal apodeme present. Legs with usual series of setae. Legs І 26 (25–28), femur 8 (8–9), basiventral femoral setae (bv) 8 (7–9); genu 5 (5–6), antaxial genual setae (l'') 25 (24–25); tibia 5 (5–6), paraxial tibial setae (l') 3 (2–3), setae located 1/3 from dorsal base; tarsus 4 (4–5); empodium simple, 4-rayed, tarsal solenidion knobbed. Legs І 23 (22–25), femur 6 (6–7), basiventral femoral setae (bv) 8 (8–9); genu 4 (4–5), antaxial genual setae (l'') 5 (5–6); tibia 5 (4–5); tarsus 4 (4–5); empodium simple, 4-rayed, tarsal solenidion knobbed. Opisthosoma: dorsal opisthosoma with 33 (31– 33) annuli, with elliptical microtubercles, ventrally with 63 (60–65) annuli, with round microtubercles. Setae c2 18 (17–22) on ventral annulus 11 (10–11); setae d 58 (53–61) on ventral annulus 26 (25–26); setae e 10 (8– 13) on ventral annulus 41 (40–42), setae f 15 (13–16) on 6th ventral annulus from rear. Setae h1 3 (3–4). Male genitalia 5 (5–6) long, 15 (14–15) wide, proximal setae on coxisternum ІІ (3a) 13 (11–14).

Types. Holotype, female, China: Heilongjiang Province, Jingbo Lake, 43.52°N, 128.54°E. July 29, 2006, from Rhamnus diamantiaca Nakai (Rhamnaceae) , coll. Xue, Xiao-Feng and Song, Zi-Wei. Paratypes, 10 females and 3 males, with the same data as holotype.

Relation to host. Vagrant on leaf surface. No damage to the host was observed.

Etymology. The specific designation diamantiacae is from the species name of the host plant, diamantiaca .

Remarks. This species is similar to Tetra heilongjiangensis Kuang, 1995 , but can be differentiated by dorsal annuli with microtubercles (dorsal annuli smooth in T. heilongjiangensis ), median line present (median line absent in T. heilongjiangensis ), coxal area with granules (coxal area with short lines in T. heilongjiangensis ).

Figures

FIGURE 3. Tetra diamantiacae sp. nov. A, dorsal view of female; B, coxae and female genitalia; C, legs І and І; D, empodium; E, male genitalia; F, lateral view of anterior region; G, lateral microtubercles; H, lateral view of the caudal opisthosoma.